On Thu, May 04, 2006 at 12:20:47AM -0700, Jeff Bonwick wrote:
> > I just got an Ultra 20 with the default 80GB internal disk.  Right now, 
> > I'm using around 30GB for zfs.  I will be getting a new 250GB drive.
> > 
> > Question: If I create a 30GB slice on the 250GB drive, will that be okay 
> > to use as mirror (or raidz) of the current 30GB that I now have on the 
> > 30GB drive?  I ask because if I remember correctly, some volume managers 
> > require(?) that mirrors should use drives with the same geometry.
> 
> Yes.  The size of a ZFS mirror is the size of its smallest member.
> However, if you later replace the 30G slice with a shiny new 25G drive,
                                                               ^^^ 250G,
presumably?

> the mirror will automatically grow to make the full 250G available.
> 
> Jeff
> 
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-- 
Jonathan Adams, Solaris Kernel Development
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